Purifloh Limited provides the first stage report recently received from the Government Chest Hospital in Hyderabad, India. Dr Anil reports on the protocols and outcomes associated with the testing of PO3's Free Radical Generator (FRG) air purification system, a series of trials targeting the elimination of air borne Mycobacterium tuberculosis (MTB) bacteria. The company has previously reported on these trials to the ASX (30 April 2019). The site of the first stage of the trial was a dedicated ward for respiratory diseases, that was both large in scale and open to outside air, where the ward treated patients suffering from tuberculosis. As previously announced, the environment in which the initial trials were conducted was complex and it ultimately proved difficult to isolate baseline MTB levels. However, the overall results of the first stage tests have reinforced the company's confidence the FRG will be effective in reducing airborne bacteria levels and the second stage of testing has now commenced. The report provides a detailed analysis of the tests which include, by way of overview: The high levels of airborne contamination within the ward overpowered the presence of MTB making it difficult to establish meaningful baseline MTB levels. This level of background contamination did however provide an opportunity to assess the ability of the system to perform in a real world environment. The report provides positive validation of this performance as there was a significant reduction in bioaerosol levels during the treatment period including reductions in pathogenic species of mold such as Aspergillus fumigatus and Aspergillus flavus. This is the first time that the FRG system has demonstrated it's effectiveness in eliminating pathogenic organisms in a hospital environment, an important outcome achieved in spite of the challenges involved with the high ventilation levels in the ward. Issues identified during the testing phase which aid planning of the next trials were as follows: The patients within the ward were in an advanced stage of treatment and consequently not releasing significant levels of MTB into the ward environment. High levels of other airborne contaminants, particularly bacteria and mold, dominated the sample cultures with the presence of MTB being too low for meaningful baseline results to be established; The ward had a great deal of air flow variability due to a high rate of ventilation as: it was open to the outside to provide ventilation; and had a large number of health care workers moving in and out of the ward; and the tuburculosis ward itself was too large (93m2) for the unit that has been configured for a target room size of 30 m2.